Ultrastable, Deformable, and Stretchable Luminescent Organic–Inorganic Perovskite Nanocrystal–Polymer Composites for 3D Printing and White Light-Emitting Diodes
| Autor: | Che Yu Chang, Wei Li Hong, Ching Ling Hsu, Mahesh Karupathevar Ponnusamythevar Ochathevar, Mu Chun Niu, Yi Tong Kuo, Yu Chiang Chao, Ching Lan Tai, Sheng-fu Horng |
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| Rok vydání: | 2019 |
| Předmět: |
chemistry.chemical_classification
Materials science business.industry Composite number 02 engineering and technology Polymer 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences law.invention Nanocrystal chemistry law Optoelectronics General Materials Science Extrusion Chromaticity 0210 nano-technology Luminescence business Light-emitting diode Perovskite (structure) |
| Zdroj: | ACS Applied Materials & Interfaces. 11:30176-30184 |
| ISSN: | 1944-8252 1944-8244 |
| DOI: | 10.1021/acsami.9b06248 |
| Popis: | Organic-inorganic perovskite nanocrystals with excellent optoelectronic properties have been utilized in various applications, despite their stability issues. The perovskite materials are sensitive to environments such as polar solvents, moisture, and heat. Thus, they are not used for extrusion three-dimensional (3D) printing, as it is usually conducted in the ambient environment and requires heating to liquefy the printed materials. In this work, 11 thermoplastic polymers conventionally used for extrusion 3D printing were investigated to test their capability as protective encapsulation materials for perovskite nanocrystals. Three of them exhibited good protective properties, and one (polycaprolactone, PCL) of these three could be blended with perovskite nanocrystals to form perovskite nanocrystal-PCL composites, which were deformable and stretchable once heated. Because of the low melting point of PCL, the perovskite nanocrystals maintained their optical properties after 3D printing, and the printed objects were still having fluorescent behavior. Moreover, fluorescent micrometer-sized fibers based on the perovskite nanocrystal-PCL composites could also be simply prepared using cotton candy makers. Perovskite nanocrystal-PCL composite films with different emission wavelengths were incorporated with blue light-emitting diodes (LEDs) to realize white LEDs with Commission Internationale de l'Éclairage chromaticity coordinates of (0.33, 0.33). |
| Databáze: | OpenAIRE |
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